Is it fitting that Christ’s Body and Blood become present in the Eucharist under the appearances of bread and wine?

Yes, for this way of being present corresponds perfectly to the sacramental celebration of the Eucharist. Jesus Christ gives himself to us in a form that employs the symbolism inherent in eating bread and drinking wine. Furthermore, being present under the appearances of bread and wine, Christ gives himself to us in a form that is appropriate for human eating and drinking. Also, this kind of presence corresponds to the virtue of faith, for the presence of the Body and Blood of Christ cannot be detected or discerned by any way other than faith. That is why St. Bonaventure affirmed: “There is no difficulty over Christ’s being present in the sacrament as in a sign; the great difficulty is in the fact that He is really in the sacrament, as He is in heaven. And so believing this is especially meritorious” ( In IV Sent., dist. X, P. I, art. un., qu. I). On the authority of God who reveals himself to us, by faith we believe that which cannot be grasped by our human faculties (cf. Catechism, no. 1381).